Max ams



(No Model.)

M. AMS. SHEET METAL GAN. No. 593,558. Patented Nov: 16,1897.

UNITED STATES PATENT OFFICE.

MAX AMS, OF NEW YORK, N. Y.

SHEET-M ETAL CAN'.

SPECIFICATION forming part of Letters Patent No. 593,558, dated November16, 1897.

Application filed April 1, 1897. Serial No. 630,273. (No model.)

To all whom it may concern.:

Beit known that I, MAX AMS, of New York city, county and State of NewYork, have invented an Improved Sheet-etal Can, of which the followingis a specification.

This invention relates to a sheet-metal can united at its overlappingedges without solder and in such a Inanner as to eectively withstandpressure.

Owing to sanitary considerations it is very desirable that sheet metalpreserve cans should contain no solder in the joint; but as these cansare subjected to a severe interior steam-pressure the difficulty arisesto construct a joint free from solder which will not open under thispressure. By my invention such a joint is formed in a simple, strong,and workmanlike manner.

In the accompanying drawings, Figure l is a perspective view of myimproved sheetmetal can; Fig. 2, a cross-section through the joint,showing itopen for the sake of greater clearness and before beingcorrugated; Fig. 3, a longitudinal section on line 3 3, Fig. 2; and Figiis a longitudinal section on line 44,Fig. 1.

The letter a represents the plain cylindrical -body of a sheet-metalcan, which is closed along its upright edge by a lap-joint a', intowhich a suitable packing b is introduced. After the lap-joint has beenformed the overlapping sections of the metal are subjected to the actionof a pair of dies, which will corrugate, crimp, or bulge the metal, Fig.4. These corrugations, crimps, or bulges are formed in all the fourthicknesses of the joint, and in this way the parts f the joint are sointerlocked that the projections of any one thickness are received bycorresponding depressions of the adjoining thicknesses. The corrugationsa2 extend transversely across the joint and from edge to edge thereof,but not into the body of the can. I prefer to form the corrugations atan inclination to the bottom of the can,whereby the resistance againstradially-actin g interior pressure is increased.

It will be seen that by the construction described a reliable joint isformed, which is perfectly tight and will effectively withstandsteam-pressure.

What I claim isl. A sheet-metal can, having its joint or seam providedwith a series of inclined transverse corrugations or creases extendingfrom one end ofl the joint or seam to the other, substantially asdescribed.

2. A sheet-metal can having a joint or seam, composed of fourthicknesses of metal, and which joint or seam projects beyond the outercircumference'of the can, and is provided with a series of transverseinclined corrugations or creases which extend from one end of the seamor joint to the other, substantially as specied.

MAX AMS.

Vitnesses:

- WILLIAM SCHULZ,

F. v. BRIESEN.

